答案：
The insurance company tested the new iPhones through its breakability drop tests, which include dropping the devices on a rough sidewalk from six feet high.
A list of commonly encountered normal structures that are often misinterpreted as pathological (pathologic) ones is provided in Table 21.1.
語言點：
易碎性：breakability
跌落測試：drop test
人行道：sidewalk
粗糙：rough
包括：include doing sth.
語法要點：定語從句
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1.定語從句：由關係代詞 who, whom, whose, that, which;
（下麵十個句子請讀 5遍並脫口譯出！）
1. The death notices tell us about people who have died during the week.
2. The man (whom) you spoke to just now is my friend.
3. The building whose lights are on is beautiful.
4. Please find a place which we can have a private talk in.
5. The knee is the joint where the thighbone meets the large bone of the lower leg.
6. He still remembers the day when he went to school.
7. It is no need telling us the reason why you didn't finish it in time.
8. He has three sons, two of whom died in the war.
9. Mr. Smith, whose wife is a clerk, teaches us English.
10. In the Sunday paper there are comics, which children enjoy.
2.隻能用that和who引導的定語從句
A．all, nothing, anything, a few, one做先行詞指物時
B．先行詞前有形容詞最高級修飾時，後麵常跟that而不是wh
C．先行詞前有 the only, the first, the last, the next, the very等詞修飾時，引導詞隻能用that。
D．當先行詞是 anyone, anybody, everyone, everybody, someone, somebody時，後麵要用who或who
● All that glitters is not gold. 閃光的並非都是金子。
3.as 引導定語從句
as 引導的定語從句有兩種形式：
A．引導限製性定語從句。
在此類定語從句中，as常與主語中作為其先行詞的such, the same或as聯用構成，“such... as”，“the same... as”和“as ...as”句型，可代替先行詞。
例如：We hope to get such a tool as he is using. 我們希望得到他正在用的那種工具。
B．as 引導非限製性定語從句時，作用與which相同，as
（這是語法考試的一個考點。）
［注意區別］：
as 引導的從句用於句首、句中或句後，而which引導的定語從句不
例如：As is reported, a foreign delegation will visit the city.
